i landed a 9-10# keeper on a fly rod the other day, actualy looking for mackeral. there were 2 of us trying fly rods, the other guy was using an 8# leader according to him, while i was using the heavy tappering leader i listed before. he never landed a keeper size fish, but did fine with schoolies with no break off.
i had a lot of touble with some striper flies and other salt water flies, some were just too light for the heavy rod & line, some obviosly needed to be trolled, but it was nice to try it out. oh, and i did land a mackeral - great little fight on a fly rod!
hmm, i just checked and i guess i didn't tell ya'll about leader for fly fishin stripers, so here's my info.
you can get away with a 8-13# leader fly fishing for stripers, if you are lucky and are hooking schoolies, however you should step up to a tappered leader for the big guys. after a lot of research i have come up with this tappering formula used in maine:
4' of 30# mono connecting to 3' of 25# mono connecting to 2' of 20# mono connected to 1-2' of 17-20# floro (floro working better on those gillplates and other shearing problems). the original said 1' of floro - wrong! unless you like retieing a leader on the river, these are big flies and you go through a lot of leader just tieing them on, so 1-2' of floro on the end is a good idea. use the heaviest rod and reel you can find. that all said, a 6-8weight combo will get you into the action.